Salix raupii

Argus

Canad. J. Bot. 52: 1303, plate 1. 1974.

Common names: Raup willow
EndemicConservation concern
Treatment appears in FNA Volume 7. Treatment on page 85. Mentioned on page 61, 86.

Plants 1.2–1.8 m, not clonal. Stems erect; branches gray-brown, glabrous; branchlets yellowbrown, glabrous. Leaves: stipules foliaceous; petiole 5–9 mm; largest medial blade narrowly elliptic, 32–58 × 12–19 mm, 2–3.3 times as long as wide, base cuneate or convex, margins slightly revolute, entire, apex acute to acuminate, abaxial surface glabrous, adaxial slightly glossy, glabrous; proximal blade margins shallowly serrulate; juvenile blade glabrous. Catkins: staminate 17.5–42 × 5–13 mm, flowering branchlet 6–7 mm; pistillate moderately densely flowered, stout, 20–40 × 6–12 mm, flowering branchlet 4–7 mm; floral bract tawny or bicolor, 1.3–2.5 mm, apex rounded, entire, abaxially glabrous. Staminate flowers: abaxial nectary 0.3–0.8 mm, adaxial nectary narrowly oblong, 0.6–1 mm, nectaries distinct; filaments distinct, glabrous; anthers ellipsoid, shortly cylindrical, or globose, 0.4–0.7 mm. Pistillate flowers: abaxial nectary absent, adaxial nectary narrowly oblong or oblong, 0.5–1.1 mm, equal to or longer than stipe; stipe 0.4–1.2 mm; ovary pyriform, usually glabrous, rarely puberulent, beak slightly bulged below styles; ovules 12 per ovary; styles 0.6–0.8 mm; stigmas flat, abaxially not papillate with rounded tip, or broadly cylindrical, 0.3–0.5 mm. Capsules 4.4–8 mm.


Phenology: Flowering late Jun.
Habitat: Thickets in moist, open forests, gravel floodplains
Elevation: 800-1500 m

Distribution

V7 91-distribution-map.gif

Alta., B.C., N.W.T., Yukon.

Discussion

Of conservation concern.

Salix raupii resembles glabrous S. glauca var. villosa. Thin-layer chromatography of leaf phenolics in S. raupii revealed a pattern similar to those of S. glauca vars. villosa and acutifolia and S. athabascensis (G. W. Argus, unpubl.). Based on overall similarity, its nearest neighbors are S. glauca, in a broad sense, and S. athabascensis (Argus 1997). The sectional placement of this species is uncertain. It is placed here in sect. Myrtilloides because it clusters with S. athabascensis, but it is evidently close to S. glauca and may be a species of intersectional hybrid origin.

Selected References

None.

Lower Taxa

None.

... more about "Salix raupii"
connate +  and distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
red turning yellow +
globose +, cylindrical +  and ellipsoid +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Rounded (?) +, Acute (?) +  and Acuminate (?) +
George W. Argus +
convex +  and cuneate +
Myrtilloides +
tapering +
toothed +  and 2-fid +
persistent +
subglobose +  and globose +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.44 cm4.4 mm <br />0.0044 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
flowered +, pistillate +  and staminate +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
pendulous +, spreading +  and erect +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Raup willow +
Alta. +, B.C. +, N.W.T. +  and Yukon. +
800-1500 m +
bicolor +  and tawny +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
pistillate +  and staminate +
bisexual +  and unisexual +
spherical +
Thickets in moist, open forests, gravel floodplains +
white and ferruginous +  and white +
long-silky +
cylindrical +, ribbonlike +  and flattened +
unbranched +  and spicate +
subterminal +  and axillary +
membranaceous +
3.2 cm32 mm <br />0.032 m <br /> (5.8 cm58 mm <br />0.058 m <br />) +
obovate +, oblong +, oblanceolate +, circular +, subcircular +  and elliptic +
1.2 cm12 mm <br />0.012 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
arranged +  and alternate +
marcescent +
deciduous +
2-7[-10]-carpellate +
puberulent +  and glabrous +
pyriform +
glandular-dotted +
flat;convex;flat;convex +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Flowering late Jun. +
Canad. J. Bot. +
overlapping +
distinct +
Endemic +  and Conservation concern +
branched +, sympodial +, monopodial +  and branching +
papillate +
cylindrical +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
caducous +  and persistent +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
persistent +  and deciduous +
ferruginous +  and white +
Salix raupii +
Salix sect. Myrtilloides +
species +
rounded +
sympodial +, branching +  and heterophyllous +
plant +  and not clonal +